//Example: number_format(24000.1, 2, ',', ' ');
// returns: "24 000,10"

function number_format(number, decimals, dec_point, separator) {
        number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
        var n = !isFinite(+number) ? 0 : +number,
            prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
            sep = (typeof separator === 'undefined') ? ',' : separator,
            dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
            s = '',
            toFixedFix = function(n, prec) {
                var k = Math.pow(10, prec);
                return '' + (Math.round(n * k) / k)
                    .toFixed(prec);
            };

        s = (prec ? toFixedFix(n, prec) : '' + Math.round(n))
            .split('.');
        if (s[0].length > 3) {
            s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
        }
        if ((s[1] || '')
            .length < prec) {
            s[1] = s[1] || '';
            s[1] += new Array(prec - s[1].length + 1)
                .join('0');
        }
        return s.join(dec);
    }